Add sample databases for recent versions, for use in compatibility tests
diff --git a/tests/sample_data/sample.db.0.7.5 b/tests/sample_data/sample.db.0.7.5
new file mode 100644
index 0000000..bc0d2ad
--- /dev/null
+++ b/tests/sample_data/sample.db.0.7.5
Binary files differ
diff --git a/tests/sample_data/sample.db.0.8.1 b/tests/sample_data/sample.db.0.8.1
new file mode 100644
index 0000000..8da448d
--- /dev/null
+++ b/tests/sample_data/sample.db.0.8.1
Binary files differ
diff --git a/tests/sample_data/sample.db.0.9.0 b/tests/sample_data/sample.db.0.9.0
new file mode 100644
index 0000000..4964b00
--- /dev/null
+++ b/tests/sample_data/sample.db.0.9.0
Binary files differ
diff --git a/tests/sample_data/sample.db.0.9.1 b/tests/sample_data/sample.db.0.9.1
new file mode 100644
index 0000000..f4b8803
--- /dev/null
+++ b/tests/sample_data/sample.db.0.9.1
Binary files differ
diff --git a/tests/sample_data/sample.db.0.9.2 b/tests/sample_data/sample.db.0.9.2
new file mode 100644
index 0000000..42c2965
--- /dev/null
+++ b/tests/sample_data/sample.db.0.9.2
Binary files differ
